Quick Answer
NEC 690.12 requires that solar panels be installed with a maximum of 20 degrees of tilt between the solar array and the plane of the roof. This standard is crucial for ensuring optimal performance and safety in solar systems. Installation choices must align with this requirement for compliance.
Understanding the Impact of Solar Panel Orientation
When installing a solar panel array, NEC 690.12 plays a significant role in determining the optimal orientation. The standard dictates that the solar array must be installed with a maximum of 20 degrees of tilt between the solar array and the plane of the roof. This allows for maximum energy output while ensuring safety and compliance.
Techniques for Optimal Installation
To ensure compliance with NEC 690.12, solar installers can employ various techniques. One approach is to use a “tilt meter” to measure the actual tilt of the solar array in relation to the roof. Additionally, installers can utilize specialized software to simulate the performance of the solar array based on different tilt angles. By combining these tools, installers can determine the optimal installation angle for maximum energy output while meeting NEC 690.12 requirements.
Practical Considerations for Solar Panel Installation
In practice, solar installers must balance the need for optimal energy output with the constraints imposed by NEC 690.12. For example, if a roof has a moderate pitch (around 8-10 degrees), the installer may need to adjust the solar array tilt to a maximum of 20 degrees to ensure compliance. This may involve reconfiguring the solar array layout or using specialized racking systems to achieve the desired tilt angle. By taking these factors into account, solar installers can create high-performing solar systems that meet NEC 690.12 requirements.
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